How to update on Linux ?

[miguelillo84]

I just received the Dolphin sensor bar but I only can use the wiimote at mode 4 (emulation mode). I read that it works since 5.0-876 version. How can I upgrade from 4 GIT version?

Thanks.

Edit: I just update ussing:
sudo apt-get update
sudo apt-get install dolphin-emu

But i also can use the wiimote. Help!